99
2. Engine starts but stops again/runs
unevenly
CAUSE
● Air in fuel lines
● Lack of fuel
– fuel taps closed
– fuel tank empty/wrong tank on line
– fuel filters clogged (due to contaminants/paraffin
precipitation in the fuel as a result of low outside
temp.)
● TAMD71B: Preheating insufficient
– incorrect starting method
– starter element not in circuit
● Insufficient air supply to engine
– air cleaner filter clogged
● Pressure line rupture
3. Engine coolant temperature too high
CAUSE
● Coolant level in engine too low (air in system)
● Thermostat malfunction
● Faulty seawater pump (pump impeller)
● Sea cock closed
● Seawater intake blocked
● Seawater filter blocked
● Heat exchanger core clogged
● Faulty circulation pump
REMEDY
Vent the fuel system as shown on page 54
Open the fuel cocks
Fill with fuel/connect the correct fuel tank
Fit new fuel filters (pre-filter and/or fine filters). Vent
the system as shown on page 54
Try starting again as shown on page 23
Check that none of the semi-automatic fuses in the
terminal box has tripped (see page 71 for instructions
on resetting fuses)
Check the electrical leads and key switch, starter
relay and hihg power relay (swap the starter relay
temporarily with stop relay if required). Contact author-
ized service mechanic if the starter element needs to
be replaced
Fit a new air cleaner filter/clean air cleaner filter,
check ventilation to engine compartment
Install new delivery pipe(s)
REMEDY
Fill the engine with coolant and vent the system as
described on pages 59– 60
Install a new thermostat
Replace the seawater pump impeller as shown on
page 64
Open the boat’s sea cock
Clean the seawater intake
Clean the seawater filter as shown on page 60
Clean the insert(s) as shown on pages 60–62
Contact an authorized Volvo Penta service mechanic
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